Best O365 Apps

248+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated September 2026

Finding the right o365 apps can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top O365 Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.2M)YesYesSep 2026
2Microsoft CopilotMicrosoft CopilotFree4.7★ (1.3M)YesYesSep 2026
3Microsoft OneDriveMicrosoft OneDriveFree4.7★ (487K)NoYesSep 2026
4Microsoft 365 AdminMicrosoft 365 AdminFree4.6★ (5.8K)NoNoSep 2026
5XLSX Sheets: Edit SpreadsheetXLSX Sheets: Edit SpreadsheetFree4.5★ (2.9K)NoYesSep 2026
6Microsoft WordMicrosoft WordFree4.7★ (3M)NoYesSep 2026
7Microsoft ExcelMicrosoft ExcelFree4.7★ (1.5M)NoYesSep 2026
8Microsoft TeamsMicrosoft TeamsFree4.8★ (3.4M)NoYesSep 2026

Top Picks for O365

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.2M ratings)
FreeAdsIn-App Purchases
#10in Productivity
Microsoft Outlook screenshot 1
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Microsoft Outlook screenshot 6

Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files from various cloud services. Enhance productivity with AI-powered writing assistance and smart inbox features.

What We Love

  • 🚀 Great for corporate email
  • 👍 Customizable and user-friendly
  • 🚀 Seamless integration with Microsoft 365
  • 👍 Solid email and calendar functionality

Room to Improve

  • 🐛 Buggy and unstable at times
  • 🔋 High battery consumption
  • 🔒 Security issues with password resets
  • 👎 Limited file attachment options
Microsoft Copilot#2

Microsoft Copilot by Microsoft Corporation

AI-powered productivity
Strong Contender
📊 Productivity
4.7😐(1.3M ratings)
FreeAdsIn-App Purchases
#11in Productivity
Microsoft Copilot screenshot 1
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This AI-powered app helps you be more productive at work. Chat with an AI assistant to create content, manage projects, find files, and learn new concepts. It offers voice interaction and expert insights for various tasks.

What We Love

  • 🚀 Seamless integration of Office apps
  • 🔒 Secure cloud storage with OneDrive
  • 👍 Convenient all-in-one productivity solution
  • 🚀 Great for on-the-go work and collaboration

Room to Improve

  • 🐛 Inconsistent file saving and syncing
  • 🔍 Confusing file management and navigation
  • 🔍 Limited functionality compared to desktop Office
  • 🐛 Frequent crashes and performance issues
  • 💰 Subscription-only model, no standalone option
Microsoft OneDrive#3

Microsoft OneDrive by Microsoft Corporation

File & photo cloud storage
Worth Considering
📊 Productivity
4.7😐(487K ratings)
FreeIn-App Purchases
#18in Productivity
Microsoft OneDrive screenshot 1
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Securely store, back up, and sync your photos, videos, and files across all your devices. Share content with others, scan documents, and access files offline. Offers free storage with options to upgrade for more space and premium features.

What We Love

  • 🚀 Seamless syncing across devices
  • 💡 Useful for storing and accessing files
  • 🔒 Secure cloud storage
  • 👍 Great integration with Microsoft Office
  • 🚀 Fast uploads and downloads

Room to Improve

  • 🐛 Unreliable app performance
  • 🐛 Issues with photo/video uploads
  • 🐛 Buggy PDF annotation tools
  • 🐛 Inconsistent user experience across platforms
  • 🔋 High battery drain

More O365 apps to explore

FAQ about O365

What are the best o365 apps for iPhone?
Microsoft Outlook tops our o365 apps ranking as of September 2026, with a 4.8-star average from 9.2M App Store ratings, and it's free to download.
Yes — 20 of the top o365 apps we rank are free to download, including Microsoft Outlook and Microsoft Copilot.
Microsoft Outlook shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 248+ o365 apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This application consolidates all your email accounts and calendars into a single, convenient location. It helps you manage your inbox, schedule meetings, and access files from various cloud storage services. The app also offers AI-powered features to enhance productivity, such as summarizing long email threads and assisting with writing.
Key features include a smart inbox that sorts messages, quick swipe actions for managing emails, easy sharing of meeting availability, and the ability to find contacts and trips. You can also view and attach files from services like OneDrive and Dropbox without downloading them, and edit Office documents directly within the app.

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